CN108119294A - A kind of spring bistable directly drives float type wave energy power generation - Google Patents
A kind of spring bistable directly drives float type wave energy power generation Download PDFInfo
- Publication number
- CN108119294A CN108119294A CN201711335978.3A CN201711335978A CN108119294A CN 108119294 A CN108119294 A CN 108119294A CN 201711335978 A CN201711335978 A CN 201711335978A CN 108119294 A CN108119294 A CN 108119294A
- Authority
- CN
- China
- Prior art keywords
- mover
- spring
- output system
- connecting shaft
- energy output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/12—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy
- F03B13/14—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates characterised by using wave or tide energy using wave energy
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
- H02K7/1892—Generators with parts oscillating or vibrating about an axis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
Abstract
The invention discloses a kind of spring bistables directly to drive float type wave energy power generation, including energy output system, the bottom of the energy output system is equipped with heave plate, it is connected with for energy output system to be fixed on the mooring line on sea bed in heave plate, the top of the energy output system is connected by outer connecting shaft with float；The energy output system includes housing, linear electric generator is installed in the housing, linear electric generator includes stator and mover, the bottom of the mover is connected by connecting spring with accumulator, interior connecting shaft is connected at the top of mover, interior connecting shaft is rigidly connected with outer connecting shaft, and fixed block and several oblique springs are equipped in the interior connecting shaft；Inner wall of the both ends of the oblique spring respectively with fixed block and housing is connected, and when float and mover are with wave up-down vibration, oblique spring generates elastic force effect by stretching and compressing, to the movement of mover and generates negative stiffness, forms nonlinear system.
Description
Technical field
The present invention relates to renewable energy technologies and ocean power generation field, specifically, it is double to be related specifically to a kind of spring
Stable state directly drives float type wave energy power generation.
Background technology
Ocean covers the surface of the earth 70 percent, and available energy greatly exceeds current global energy and needs
The sum total asked.Ocean energy is clean regenerative resource, and alleviating energy crisis and environmental pollution are asked in the development and utilization of science
Topic is of great significance.The species of ocean energy is varied, and wherein wave energy has many advantages, such as that energy density is high, distribution is wide.
Compared to other renewable and clean energy resources such as wind energy, solar energy, energy density highest.However, wave energy in practical applications
Power generator is of high cost there are energy capture efficiency is low, can not also apply to production practices on a large scale at present.
Currently with wave energy scheme there are many kinds of, wherein the oscillating float type wave-energy power generation using linear electric generator
Device reduces the intermediate link of energy conversion, generating efficiency higher, while reduces the complexity of device, convenient for safeguarding.But
Linear unit at this stage captures energy most there are drawbacks such as the low, narrow bandwidths of energy capture efficiency that is, when device resonates
More, when incidence wave frequency departure device intrinsic frequency, the energy of capture substantially reduces.However in actual sea situation, wave frequency
Rate is generally below the intrinsic frequency of device, therefore actual energy capture rate is low.
The content of the invention
It is an object of the invention to be directed to deficiency of the prior art, a kind of spring bistable is provided and directly drives float-type wave
Energy power generator, solves the defects of conventional linear wave energy generating set, has widened energy capture bandwidth, increased and enter in low frequency
Energy capture during ejected wave, and in resonance, float motion amplitude is relatively small, has protective effect to power generator, favorably
In its service life of extension.
Following technical scheme may be employed to realize in technical problem solved by the invention：
A kind of spring bistable directly drives float type wave energy power generation, including energy output system, the energy output
The bottom of system is equipped with heave plate, is connected in heave plate for energy output system to be fixed on to the mooring line on sea bed,
The top of the energy output system is connected by outer connecting shaft with float；
The energy output system includes housing, linear electric generator is equipped in the housing, linear electric generator includes
Stator and mover, the stator are electrically connected by conducting wire with the accumulator mounted on housing bottom；
The bottom of the mover is connected by connecting spring with accumulator, and interior connecting shaft, interior company are connected at the top of mover
Spindle is rigidly connected with outer connecting shaft, and fixed block and several oblique springs are equipped in the interior connecting shaft；
Inner wall of the both ends of the oblique spring respectively with fixed block and housing is connected, when float and mover shake up and down with wave
When dynamic, oblique spring generates elastic force effect by stretching and compressing, to the movement of mover and generates negative stiffness, forms nonlinear system.
Further, the stator is equipped with induction coil winding, and mover is the axis with permanent magnet.
Further, the oblique spring is uniformly distributed along the outer circumferential surface of fixed block.
Compared with prior art, the beneficial effects of the present invention are：
The shortcomings that oblique spring forms nonlinear bistable system, overcomes linear system is introduced, improves vibration energy absorption, especially
The absorption of energy when it is low frequency.
Description of the drawings
Fig. 1 is the structure diagram of float type wave energy power generation of the present invention.
Fig. 2 is the schematic diagram of energy output system of the present invention.
Fig. 3 is the A-A sectional views of energy output system of the present invention.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, with reference to
Specific embodiment, the present invention is further explained.
Referring to Fig. 1, Fig. 2 and Fig. 3, a kind of spring bistable of the present invention directly drives float type wave energy power generation,
Including energy output system 3, the bottom of the energy output system 3 is equipped with heave plate 4, is connected with to incite somebody to action in heave plate 4
Energy output system 3 is fixed on the mooring line 5 on sea bed, and the top of the energy output system 3 passes through outer connecting shaft 2 and float
1 connection；
The energy output system 3 includes housing, and linear electric generator 14, linear electric generator 14 are equipped in the housing
Including stator 9 and mover 10, the stator 9 is equipped with induction coil winding, and mover 10 is the axis with permanent magnet；
The stator 9 is electrically connected by conducting wire 11 with the accumulator 13 mounted on housing bottom；
The bottom of the mover 10 is connected by connecting spring 12 with accumulator 13, and the top of mover 10 is connected with interior connection
Axis 8, interior connecting shaft 8 are rigidly connected with outer connecting shaft 2, and fixed block 7 and several oblique springs are equipped in the interior connecting shaft 8
6, the oblique spring 6 is uniformly distributed along the outer circumferential surface of fixed block 7；
Inner wall of the both ends of the oblique spring 6 respectively with fixed block 7 and housing is connected, when float 1 and mover 10 are with wave
During up-down vibration, oblique spring 6 generates elastic force effect by stretching and compressing, to the movement of mover 10 and generates negative stiffness, is formed non-
Linear system.
The operation principle of the present invention is as follows：
Linear motor is reduced to induction coil winding (stator) and axis (mover) with permanent magnet, when float is with ripple
Wave vibration drives permanent magnet vibration, and the oblique spring that central shaft is connected with surrounding is with the movement Compression and Expansion of mover, to mover
Movement generate elastic force interaction, system is made negative stiffness occur, and can to significantly improve vibrational energy particularly low for negative stiffness
The absorption of frequency vibration energy, makes energy output system potential energy wells (conventional apparatus is individual well) that twin-well characteristic be presented, and research shows double
Bounce can significantly improve energy absorption between well.By numerical simulation, it can verify that the method can significantly improve energy capture effects
Energy capture efficiency during rate, especially low frequency.
The basic principles, main features and the advantages of the invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (3)
1. a kind of spring bistable directly drives float type wave energy power generation, it is characterised in that：Including energy output system (3),
The bottom of the energy output system (3) is equipped with heave plate (4), is connected in heave plate (4) for by energy output system
(3) mooring line (5) being fixed on sea bed, the top of the energy output system (3) pass through outer connecting shaft (2) and float (1)
Connection；
The energy output system (3) includes housing, and linear electric generator (14), linear electric generator are equipped in the housing
(14) stator (9) and mover (10) are included, the stator (9) passes through conducting wire (11) and the accumulator (13) mounted on housing bottom
Electrical connection；
The bottom of the mover (10) is connected by connecting spring (12) with accumulator (13), is connected at the top of mover (10) interior
Connecting shaft (8), interior connecting shaft (8) and outer connecting shaft (2) are rigidly connected, be equipped on the interior connecting shaft (8) fixed block (7),
And several oblique springs (6)；
Inner wall of the both ends of the oblique spring (6) respectively with fixed block (7) and housing is connected, when float (1) and mover (10) with
During wave up-down vibration, it is negative firm to generate the movement of mover (10) elastic force effect generation by stretching and compressing for oblique spring (6)
Degree forms nonlinear system.
2. spring bistable according to claim 1 directly drives float type wave energy power generation, it is characterised in that：It is described fixed
Sub (9) are equipped with induction coil winding, and mover (10) is the axis with permanent magnet.
3. spring bistable according to claim 1 directly drives float type wave energy power generation, it is characterised in that：It is described oblique
Spring (6) is uniformly distributed along the outer circumferential surface of fixed block (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711335978.3A CN108119294A (en) | 2017-12-14 | 2017-12-14 | A kind of spring bistable directly drives float type wave energy power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711335978.3A CN108119294A (en) | 2017-12-14 | 2017-12-14 | A kind of spring bistable directly drives float type wave energy power generation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108119294A true CN108119294A (en) | 2018-06-05 |
Family
ID=62229895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711335978.3A Pending CN108119294A (en) | 2017-12-14 | 2017-12-14 | A kind of spring bistable directly drives float type wave energy power generation |
Country Status (1)
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| CN (1) | CN108119294A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854434A (en) * | 2019-03-22 | 2019-06-07 | 上海交通大学 | Self-adaptation type bistable state float type wave energy power generation and electricity-generating method |
| CN113090437A (en) * | 2021-04-26 | 2021-07-09 | 大连海事大学 | Direct-drive wave energy power generation maximum wave energy accurate tracking control method based on spring resonance assistance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101715513A (en) * | 2007-04-18 | 2010-05-26 | 技术源于思维有限公司 | Damper and damping structure for a wave energy conversion device |
| CN102900594A (en) * | 2012-10-08 | 2013-01-30 | 常熟理工学院 | Linear type magnetic pole static type wave energy power generation device used for buoy |
| GB2522251A (en) * | 2014-01-20 | 2015-07-22 | Norwegian University Of Science And Technology | Wave energy convertor |
| CN105697223A (en) * | 2016-04-26 | 2016-06-22 | 上海交通大学 | Non-linear direct-drive float type wave power generation device |
-
2017
- 2017-12-14 CN CN201711335978.3A patent/CN108119294A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101715513A (en) * | 2007-04-18 | 2010-05-26 | 技术源于思维有限公司 | Damper and damping structure for a wave energy conversion device |
| CN102900594A (en) * | 2012-10-08 | 2013-01-30 | 常熟理工学院 | Linear type magnetic pole static type wave energy power generation device used for buoy |
| GB2522251A (en) * | 2014-01-20 | 2015-07-22 | Norwegian University Of Science And Technology | Wave energy convertor |
| CN105697223A (en) * | 2016-04-26 | 2016-06-22 | 上海交通大学 | Non-linear direct-drive float type wave power generation device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854434A (en) * | 2019-03-22 | 2019-06-07 | 上海交通大学 | Self-adaptation type bistable state float type wave energy power generation and electricity-generating method |
| CN109854434B (en) * | 2019-03-22 | 2024-01-09 | 上海交通大学 | Self-adaptive bistable float type wave energy power generation device and power generation method |
| CN113090437A (en) * | 2021-04-26 | 2021-07-09 | 大连海事大学 | Direct-drive wave energy power generation maximum wave energy accurate tracking control method based on spring resonance assistance |
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Application publication date: 20180605 |
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